Dennis b



(No Model.)

D. B. MARTIN. STOPPER FOR HOT WATER BAGS.

Patented Sept. 11, 1894.

NITED STATES DENNIS B. MARTIN, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TOTHE SEAMLESS RUBBER COMPANY, OF SAME PLACE.

STOPPER FOR HOT-WATER BAGS.

SPECIFICATION forming part of Letters Patent No. 525,853, datedSeptember 11, 1894.

Application filed June 11, 1894- Serial No. 514,229. (No model.)

To aZZ whom it may concern.-

Be it known that I, DENNIS B. MARTIN, of New Haven, in the county of NewHaven and State of Connecticut, have invented a new Improvement inStoppers for Hot Water Bags; and I do hereby declare the following, whentaken in connection with the accompanying drawings and the letters ofreference marked thereon, to be a full, clear, and exact description ofthe same, and which said drawingsconstitute part of this specification,and represent, in

Figure 1, a view in side elevation of a screwstopper constructed inaccordance with my invention; Fig. 2, a View thereof in vertical centralsection; Fig. 3, a detached view of the washer; Fig. 4, a view thereofin transverse section.

My invention relates to an improvement in that class of screw-stoppersfor water-bags whlch comprise a sheet-metal body, a wire, handle, and arubber packing or washer, the ob ect of my invention being to produce ata comparatively low cost for manufacture, a simple and strong stopper,of superior appearance and effectiveness.

With these ends in view, my invention consists in a screw-stopper havinga spun body, which is recessed to receive an annular packlng-washer andin certain details of construction and combinations of parts as will beher i ft r d scribed, and pointed out in the claim.

As herein shown, the stopper consists of a sheet-metal spun body A, adisk-shaped sheetmetal cap B applied to the open outer end thereof, awire handle 0 secured to the center of the said cap, and an annularpacking washer D, preferably formed of soft rubber, and located in anannular recess A, formed in the body just within, and located in theplane of, the closed inner end thereof. The

body is also formed with screw-threads A adapting it to be screwed intoa suitable screw-threaded socket or collar E, which is mounted in themouth of the water-bag in any approved manner, and constructed at itsinner end with an inwardly projecting annular flange E, against whichthe packingwasher D is impinged when the stopper is screwed home in thecollar. It will be understood, of course, that both the annular recess Aand the screw-threads A are spun into the body during its formation, andbefore its assemblance with the cap B, the edge of which is clasped overthe outwardly turned upper edge of the body, in the usual manner. Theannular recess extends inward sufficiently below the bottoms of thescrew-threads so that when the washer is in place, its outer edge willbe flush, or substantially flush, with the surface of the body.

By adapting the body of the stopper to itself receive the packing-washerin a recess formed in it, I secure a construction which is at onceextremely simple, cheap, attractive, convenient and cleanly. The washermay be readily removed and replaced when worn, or for the purpose ofwashing it and the stopper. Furthermore, when the stopper is screwedhome in its socket or collar, the washer is subjected not merely todirect flatwise compression, but also to pressure tending to force itoutward and expand it into the bottom of the socket, whereby itseffectiveness as a packing is greatly enhanced, the washer being forcedoutward by the inclination of the inner or outer wall of the recess inwhich it is located.

I would have it understood that I do not limit myself to the exactconstruction herein shown and described, but hold myself at liberty tomake such changes and alterations therein as fairly fall within thespirit and scope of my invention.

1 am aware, however, that a bottle-stopper, constructed with an annularrecess to receive a packing-washer, is old. I am also aware that ahollow stopper for hot-water bags, formed in part of spun sheet-metal,is old. I do not, therefore, claim either of those constructionsbroadly.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

A'screw-stopper for Water-bags, consisting of a spun sheet-metal bodyhaving its inner endclosed, and its outer end open, and formed withscrew threads, and with an annular re- In testimony whereof I havesigned this cess; located between its screw-threads and specification inthe presence of two subscribits closed inner end a sheet-metal capapplied ing witnesses.

to the open outer end of the said body, a han- DENNIS B. MARTIN. dlesecured to the said cap, and an annular Witnesses:

packing-washer located in the said recess of FRED G. EARLE,

the body, substantially as described. GEO. D. SEYMOUR.

